Press



W. KLOCKE Fame 3141,,

PRESS Filed May 4:, 1954 3 SheetsSheet 1 IN V EN TOR.

W, KLOCKE Jam, 14, 1936.

PRESS Filed May 4, 1954 5 Sheets-Shee t 2 INVENTOR.

"W/LL MIA l KL 0 01 5,

Jan. 14, 1936. w, KLQCKE 2,027,735

PRESS Filed May 4, 1934 3 Sheets-Sheet 3 .j .IN'VENTOR;

Patented Jan. 14, 1935 UNI'E'E STATES hTENT OFFICE PRESS William Klocke,Woodhaven, N. Y.

Application May 4, 1934, Serial No. 723,866

12 Claims. (01. 7440) This invention relates to presses, and providesnism operating under easy conditions, without improvements therein.shocks or severe strains. The punch-slide actu- In presses used fordoing certain types of work ating-mechanism is a series of rocking-partsconit is required that the punch-slide be actuated in nected by links,and a rotated or turning part such manner that it dwells at the end ofits which turns continuously and uniformly through Working stroke. Forexample, in presses used each cycle, all so related and arranged thatthe for forming or. molding under pressure articles links do not pullagainst the bearings of the from plastic or therma -plasticcompositions, (celrocking-parts 50 as to produce Severe Strains inluloid, bakelite, etc.) and pulp mixtures of varithe working parts or onthe bearings. The anous kinds, the punch-slide is so actuated, the alesbetween he w kin par ar g d h c purpose being to give time for thecomposition to out the cycle and the pull and push of one part set whileunder pressure. Presses heretofore n an her acts princip lly to pr rn nused for the type of work referred to, have been movements of the partsrather than pressure 0 provided it a clutch-mechanism operating to forcedirected toward a bearing. Clutches workdisengage the punch-slideactuating-mechanism ins under unusually s v re c n i ions are elimlofrom the driving means at the end-of-the-workmated, and none is requiredwhich operates withing-stroke position of the slide, the clutch-mechin acycle of p ra n. In a rdan wi h s nanism usually also operating todisengage the l pr the press would r n y be p slide-actuating mechanismat the top of the vided with a clutch which op s o t e 00 stroke, sothat a working cycle requires a double pletion of each cy art which timethe p fi 0 operation of the clutch-mechanism on the part lide s at t eop o it S o e and the Seve y of the press-operator, once to bring theclutch- Of clutch-action is least. parts into engagement at the toosition of the The inven on also pr vid n r n emen slide, (followingwhich the punch-slide is driven of the parts of the punch-slideactuating-mechaon its working-stroke and the clutch then autonism inwhich said parts, at t top-position 0f matically disengaged) and asecond time, to again the slide, and in the disengaged position of thebring the clutch parts into engagement at the clutch-parts,locks thepunch-slide against downbottom-position of the slide (following whichthe Ward movement under its own weight.

punch slide is raised to its top-position and the A11 embodiment of theinvention is illustrated clutch again automatically disengaged). With ain the accompanying drawings, in which 30 clutch, there are variationsin the stopping-posi- Fig. 1 is a side elevation of a press embodyingtion of the punch-slide, due to the variable movemy invention; ment ofthe slide-actuating-mechanism following Fig. 2 is a front View thereof(with parts in its disengagement by the clutch, and there are section);

also variations in the time of engagement of the Fig. 3 is a top planview; the punch-slide and 35 clutch-parts following the operation by thepressits actuating-mechanism in this and the precedoperator of theclutchoperating mechanism, ing views being shown in the positions whichwhich results in non-uniformity of the form, they occupy at the end ofthe working-stroke, quality and physical structure of the articles thedwell being just about to end, and the lift formed in the press.Moreover, the engagement of the slide to begin; of the clutch-parts inthe bottom-position of the Fig. 4 is a perspective view of theparts ofthe punch-slide, and with the parts of the press punch-slideactuating-mechanism, detached from under stress, is severe on theclutch, as the clutch the frame, and in the positions which they ocmustinitiate the movement of the slide-actuating cupy at the top-position ofthe stroke and in the mechanism against the resistance of the stressesdisengaged-position of the clutch-parts; 45 in the press and against theweight of the slide Fig. 5 is a sectional view through the clutch d itsCOHnected parts. and immediately associated parts in the disen- Thepresent invention provides a press, with a gaged-position of theclutch-parts, which is at punch-slide which dwells at the end of theworkthe top of the stroke of the punch-slide;

ing-stroke, in which the punch-slide is operated Fig. 6 is a diagram ofthe parts of the punch- 50 in uniform cycles; and by which uniformarticles slide actuating-mechanism, the cranks and links may beproduced, less skill and effort is required being just about to leavethe dwell producing of the press-operator, and more Work may bepositions thereof; done. It provides a press of the character de- Fig.'7 is a diagram showing the movement of scribed having a punch-slideactuating-mechathe punch-slide with relation. to a crank-pin 55 turningthrough one revolution, or through one cycle.

Referring to said drawings, numeral l9 designates the press-frame, t2the reciprooatory punch-slide, and I 4 the part (here shown as abelt-driven fly-wheel) for driving the punchslide actuating-mechanism.

The mechanism for actuating the reciprocatory punch-slide l2, comprisesa rocking part It? comprising a shaft turning in bearings in thepress-frame I0 having thereon a pair of angularly spaced arms 29, 22.The arm 22 translates rocking-movements thereof into reciprocatorymovements of the slide !2. The said mech anism further comprises arocking part 24 having angularly spaced arms 26, 28 fixed thereon (andtogether constituting a bell-crank), a rotated (revoluble) part 30 (hereshown as a crank on a sleeve 32 mounted free on rock-shaft l6), whichmay be driven so as to turn continuously and uniformly through eachcycle, links 34, 36, the link 34 connecting crank 33 to one of the armsas the arm 28, to rocking-part 24, and the link 36 connecting the otherarm (25) of rocking part 24 to arm 26 on rocking part 55, and aconnecting-rod 38 connecting arm 22 to the punch-slide I2.

The relation and arrangements of the parts of the punch-slideactuating-mechanism is primarily to produce a dwell of the punch-slideI2, of considerable duration, at the end of its working-stroke. The arms20, 22, 26, 2B of the rocking parts I6, 24 respectively are so set ontheir rock-shafts that when the revolving crank 30 is moving through anarc A having its chord at right-angles to a line connecting the end ofarm 28 with the center around which crank 30 turns, where leastlengthwise movement is imparted to link 34 and consequently leastangular movement imparted to arm 28, the connecting rod 38 and arm 22,are in virtual alinement, and the link 36 and arm 26 move in a small areA across a line corresponding to their position of alinement(toggle-motion). Referring to Fig. 6 when-the revolving arm 35 movesthrough an arc of 90 at A, the crank-arms 25 and 28 move through arc A Aof about 9, and the arms 20 and 22 are motionless or virtuallymotionless, and the punch-slide l2 dwells for a time measured by themovement through 90 of the crank 30.

The relation and arrangement of the parts of the punch-slide actuatingmechanism is also such that when the revolving crank 30 is opposite themiddle of are A the ends of the crank 30 and arm 28 and the centeraround which crank 30 turns are again in alinement (virtually in thesame line L), and the disengaging position of the clutch is arranged atthis position, or slightly beyond in the direction of revolution ofcrank 30, as indicated at C. In this position the punch-slide I2 is inapproximately its fully lifted position, and its weight tends to turnthe parts running back to the clutch. However, in this position the pullof link 34 on crank 30, is

' directly against the center around which arm The key 50 also has atail 56 which is in the path of a movable treadle-operated stop 58. Thestop 58 normally stands in the path of tail 56, and upon contacttherewith, at the end of a revolution of the fly-wheel I4 and sleeve 32(engaged through the clutch), turns the' key 56 to: move the eccentricpart 52 thereof out of the notch 54, and thereby disengages the sleeve32 from the fly-wheel l4. The stop 58 is moved out of the path of thetail 56 by the treadle-mechanism, allowing the key 59 to turn and bringthe eccentric part 52 into notch 54, thereby enga,,--

ing the sleeve 32 and fiy-wheel l4, and initiating a cycle of operationof the press. Such a clutchmechanism is disclosed in patent to Klocke710,199, Sept. 30, 1902, and in a number of other patents.

Throughout the revolution of crank 30, the pull and push of link 34 isat approximately rightangles to the arm 28, and the pull and push oflink 36 connected to arm 28 is at approximately right-angles to crank30, so that the pressure against the bearings of the rocking-partsresulting from the pull or push of revolving crank 39 is small and thereis no binding against the bearings in the punch-slide actuatingmechanismduring the driving of the punch-slide l2. It will be seen that theangles between the working parts are good through the cycle and the pulland push of links 34 and 36 act principally to produce turning-movementsof the arms 28 and 20 rather than pressure or force directed toward thebearings of the rocking parts I6, 24. Severe strains are avoided and aneasy action obtained.

As the revolving crank 30, when the clutch is engaged, turns uniformly,as the parts of the punch-slide actuating mechanism are alwaysconnected, and as the clutch (which is usually employed) is engagedthroughout a workingstroke and the lift of the punch-slide (one cycle),the cycles of movement of the punch-slide are uniform; in particular,the dwells of the punch-slide in every cycle are uniform. Thepunch-action is uniform, and the quality and form of the article formedby the press is uniform. The clutch is engaged and disengaged at the topof the stroke of the punch-slide, where the parts are not under workingstresses or strains, and the shock of engagement is relatively light.

The related movements of the punch-slide l2 and of the revolving crank30 are shown in the timing diagram Fig. 7, the line 30 designating themovement of the crank 33, and the line 12 desigr hating the relatedmovement of the punch-slide The invention may receive other embodimentsthan that herein specifically illustrated and described.

The reference numerals in the claims are used primarily for clarity, andsuch use does not imply any greater restriction than is required by theprior state of the art.

What is claimed is:

1. A press of the character described, comprising a reciprocatory slide,and actuating mechanism for said slide comprising a crank turningthrough a full revolution in each cycle, a rocking part having a pair ofangularly spaced arms thereon (24, 26, 28) and a second rocking parthaving an arm thereon (H5, 23), a link connecting an arm on said firstnamed rocking part with the arm on said second rocking part, a linkconnecting said crank (30) with the other arm of said first-namedrocking part, and means on said second rocking part for translatingrocking movements thereof into reoiprocatory movement of said slide,said parts being interconnected and arranged to produce a dwell in themovement of said slide at the bottom of its working stroke.

2. A press of the character described, comprising a reoiprocatory slide,and actuating mechanism for said siide comprising a crank turningthrough a full revolution in each cycle, a rocking part having a pair ofangularly spaced arms thereon (2d, 26, 28) and a second rocking parthaving an arm thereon (i6, 26), a link connecting an arm on said firstnamed rocking part with the arm on said second rocking part, a linkconnecting said crank (33) with the other arm of said first-namedrocking part, and means on said second rocking-part for translatingrocking movements thereof into reoiprocatory movement of said slide,said parts being interconnected and arranged to produce a dwell in themovement of said slide at the bottom of its work ing stroke, thearrangement or" the arms of said rocking parts and of the links beingsuch that in the bottom position of said slide, an arm of said firstnamed rocking-part and the link connesting it with the on said secondrocking part move in a small arc in which they remain in virtualalinement.

3. A press of the character described, comprising a reoiprocatory slide,and actuating mechanism for said slide comprising a crank turningthrough a full revolution each cycle, a rocking part having a pair ofangularly spaced arms thereon (24, 26, 28) and a second rocking parthaving an arm thereon (l6, 2%), a link connecting an arm on said firstnamed rocking part with the arm on said second rocking part, a linkconnecting said crank (33) with the other arm of said first-namedrocking part, and means on said second rocking-part for translatingrocking movements thereof into reoiprocatory movement of said slide,said parts being interconnected and arranged to produce a dwell in themovement of said slide at the bottom of its working stroke, thearrangement of the arms of said rocking-parts and of the links beingsuch that in the bottom position of said slide, an arm of said firstnamed rocking-part and the link connecting it with the arm on saidsecond rocking part move in a small arc in which they remain in virtualaline-' ment, said crank at the same time moving through an are having.a chord at approximately right angles to a line joining the axis onwhich the crank turns with the end of the arm of said first-named rockinpart with which it is linked.

4. A press of the character described, comprising a reoiprocatory slide,and actuating mechanism for said slide comprising a crank turningthrough a full revolution in each cycle, a rocking part having a pair ofangularly spaced arms thereon (24, 28, 28) and a. second rocking parthaving an arm thereon ([6, 2i?) a link connecting an arm on said firstnamed rocking part with the arm on said second rocking part, a linkconnecting said crank (30) with the other arm of said first-namedrocking part, and means on said second rocking-part for translatingrocking movements thereof into reoiprocatory movement of said slide,said parts being interconnected and arranged to produce a dwell in themovement of said slide at the bottom of its working stroke, thearrangement of said crank in the lifted position of the slide being suchthat the link connected thereto is alined with a line passing throughthe point of connection of said link to said crank and the axis on whichsaid crank turns.

5. A press of the character described comprising a reoiprocatory slide,and actuating mechanism for said slide comprising a crank turningthrough a full revolution in each cycle, a rocking part having a pair ofangularly spaced arms thereon (24, 26, 28) and a second rocking parthaving an arm thereon (I6, 20), a link connect- 0" ing an arm on saidfirst named rocking part with the arm on said second rocking part, alink connecting said crank (30) with the other arm of said first-namedrocking part, and means on said second rocking-part for translatingrock- 15 ing movements thereof into reoiprocatory movement of saidslide, said parts being interconnected and arranged to produce a dwellin the movement of said slide at the bottom of its working stroke, thearrangement of said crank 20:

in the lifted position of the slide being such that the link connectedthereto is alined with a line passing through the point of connection ofsaid link to said crank and the axis on which said crank turns, and aclutch having an engaging 25 and disengaging position corresponding tothe aforesaid position of said crank and its connected link in saidlifted position of said slide.

6. A press of the character described, comprising a reoiprocatory slide,and actuating 30 mechanism for said slide comprising a crank turningthrough a full revolution in each cycle, a rocking part having a pair ofangularly spaced arms thereon (24, 26, 28) and a second rocking parthaving an arm thereon (i6, 29), a link con- 35 necting an arm on saidfirst named rocking part with the arm on said second rocking part, alink connecting said crank (30) with the other arm of said first-namedrocking part, and means on said second rocking-part for translatingrock- 0 ing movements thereof into reoiprocatory movement of said slide,said parts being interconnected and arranged to produce a dwell in themovement of said slide at the bottom of its working stroke, thearrangement of the arms of 45 said rocking-parts and of the links beingsuch that in the bottom position of said slide, an arm of said firstnamed rocking-part and the link connecting it with the arm on saidsecond rocking part move in a small arc in which they re- 50 main invirtual alinement, said crank at the same time moving through an arc ofapproxiamtely 99 having a chord at approximately right angles to a linejoining the axis on which the crank turns with the end of the arm ofsaid first-named rocking part with which it is linked.

'7. Slide reciprocating mechanism of the character described, comprisinga crank (30) and means for rotating it, a reoiprocatory slide (12), arocking part having a pair of angularly spaced an arms thereon (24, 26,28), a second rocking part having an arm thereon (I6, 20) a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the other arm ofsaid 55 first named rocking part, and means on said second rocking partfor translating rocking movements thereof into reoiprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement 70 of said slide at the bottom of its workingstroke.

8. Slide reciprocating mechanism of the character described, comprisinga crank (39) and means for rotating it, a reoiprocatory slide (l2),

a rocking part having a pair of angularly spaced arms thereon (24, 26,28), a second rocking part having an arm thereon (I6, 20), a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the other arm ofsaid first named rocking part, and means on said second rocking part fortranslating rocking movements thereof into reciprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement of said slide at the bottom of its working stroke,an arm of said first-named rocking part and the link connecting it withthe arm on said second named rocking part being arranged to move, in thehereinbefore mentioned bottomposition of said slide, in a small arc inwhich they remain in virtual alinement.

9. Slide reciprocating mechanism of the character described, comprisinga crank (30) and means for rotating it, a reciprocatory slide (I2), arocking part having a pair of angularly spaced arms thereon (24, 26,28), a second rocking part having an arm thereon (I6, 20), a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the. other arm ofsaid first named rocking part, and means on said second rocking part fortranslating rocking movements thereof into reciprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement of said slide at the bottom of its working stroke,an arm of said first-named rocking part and the link connecting it withthe arm on said second named rocking part being arranged to move, in thehereinbefore mentioned bottom position of said slide, in a small arc inwhich they remain in virtual alinement, said rotary crank at the sametime moving through an arc having a chord at approximately right anglesto a line joining the axis on which the crank turns with the end of thearm of the firstnamed rocking part with which it is linked.

10. Slide reciprocating mechanism of the character described, comprisinga crank (30) and means for rotating it, a reciprocatory slide (l2), arocking part having a pair of angularly spaced arms thereon (24, 26,28), a second rocking part having an arm thereon (I6, 20) a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the other arm ofsaid first-named rocking part, and means on said second rocking part fortranslating rocking movements thereof into reciprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement of said slide at the bottom of its working stroke,and the arrangement of said rotary crank, at

the end of the reciprocatory movement of said slide corresponding to itslifted position being such that the link connected thereto is alinedwith a line passing through the point of connection of said link to saidrotary crank and the axis on which saidcrank turns.

11. Slide reciprocating mechanism of the character described, comprisinga crank (30) and. means for rotating it, a reciprocatory slide (l2), arocking part having a pair of angularly spaced arms thereon (24, 28,28), a second rocking part having an arm thereon (i6, 2 3), a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the other arm ofsaid first named rocking part, and means on said second rocking part fortranslating rocking movements thereof into reciprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement of said slide at the bottom of its working stroke,and the arrangement of said rotary crank, at the end of thereciprocatory movement of said slide corresponding to. its liftedposition being such that the link connected thereto is alined with a aline passing through the point of connection of said link to said rotarycrank and the axis on which said crank turns, and a clutch having anengaging and disengaging position corresponding to the aforesaidposition of said rotary crank and :1

its connected link in said lifted position of the slide.

12. Slide reciprocating mechanism of the character described, comprisinga crank (38) and means for rotating it, a reciprocatory slide (12) arocking part having a pair of angularly spaced arms thereon (24, 26,28), a second rocking part having an, arm thereon (it, 20), a linkconnecting an arm on said first-named rocking part with the arm on saidsecond rocking part, a link connecting said crank with the other arm ofsaid first named rocking part, and means on said second rocking part fortranslating rocking movements thereof into reciprocatory movement ofsaid slide, said parts being interconnected and arranged to produce adwell in the movement of said slide at the bottom of its Working stroke,an arm of said first-named rocking part and the link connecting it withthe arm on said second named rocking part being arranged to move,

in the hereinbefore mentioned bottom-position of said slide, in a smallarc in which they remain in virtual alinement, and said rotary crank atthe same time moving through an arc of approximately having a chord atapproximately right angles to a line joining the axis on which saidcrankturns with the end of the arm of the firstnamed rocking part with whichit is linked.

WILLIAM KLOCKE.

